211323412213 has 4 divisors (see below), whose sum is σ = 214787730508. Its totient is φ = 207859093920.

The previous prime is 211323412159. The next prime is 211323412243. The reversal of 211323412213 is 312214323112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87189097284 + 124134314929 = 295278^2 + 352327^2 .

It is a cyclic number.

It is not a de Polignac number, because 211323412213 - 2¹³ = 211323404021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211323412243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732159056 + ... + 1732159177.

It is an arithmetic number, because the mean of its divisors is an integer number (53696932627).

Almost surely, 2^211323412213 is an apocalyptic number.

It is an amenable number.

211323412213 is a deficient number, since it is larger than the sum of its proper divisors (3464318295).

211323412213 is an equidigital number, since it uses as much as digits as its factorization.

211323412213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464318294.

The product of its digits is 1728, while the sum is 25.

Adding to 211323412213 its reverse (312214323112), we get a palindrome (523537735325).

The spelling of 211323412213 in words is "two hundred eleven billion, three hundred twenty-three million, four hundred twelve thousand, two hundred thirteen".